Filter or strainer for well-tubes.



No. 673,398. Patented May-7., lsol. A. KELLER @L m; JgFFms. FILTER 0BSTRAINEB FORWELL TUBES.

(N M d i (Appliaton led Jan. 5, 1901.)

RAY

WAZ

. INVENTUM WHA/55555; Uw/Zozg// ZeZef, 4

UNITED STATES PATENT OFFICE.

ANTHONY KELLER AND MICHAELJEFEIHS, on PLvMoUTi-i,` INDIANA.`

FILTER OR STRAINER FOR WELL-TUBES.

SPECIFICATION forming part of Letters Patent No. 673,398, dated May V'7,1901. Application Bled January 5,11901. l Serial No. 42.264. (No model.)

To all .whom it may concern,.-

Beit known that we, ANTHONY KELLER and MICHAEL J EFEIRS, citizens of theUnited States, residing at Plymouth, in the county of Marshall and Stateof Indiana, have invented certain new and useful Improvements in Filtersor Strainers for Well-Tubes; and we do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the annexed drawings, makin g'a part of this specification, and tothe letters of reference marked thereon.

The present'invention has relation to drivewelly tubes; and the objectthereof is to provide the point or lower section of the tube with afilter or strainer to prevent fine particles of sand from entering thewell-tube when driving the same into the ground, said `filter orstrainer possessing the required strength and durability and effectivein preventing the particles of foreign matter from entering the tubewhen the drill-point is forced into the ground.

The invention consists of' a strainer or filter for driven well-tubes,constructed substantially as shown in the drawings and hereinafterdescribed and claimed. i

Figure l of the drawings is a side elevation of the drill-point or lowersection of a welltube with ourimproved filter applied thereto; Fig. 2, asectional elevation showing a portion of the tube and coiled-wirecovering. Fig. 3 is an elevation showing a portion of the coiled-wirecovering removed.

. In the accompanying drawings, A represents the lower section of awell-tube, which is provided with the usual drill-point B, connectedthereto by a screw-shank a entering and engaging the interiorscrew-threaded socket e upon the upper end of the drill-point, therebyforming a perfect couplingl between the well-tube section and point. Thetubesection A has perforations, as shown at b, and is screw-threaded atits upper end Vfor coupling thereto one of the upper tube-sections asrequired in drilling the well. The perforated tube A has a covering C,comprising a wire coil, the wire c of said coil having indentations dupon both sides thereof. The wire rst passes through a machine whichmakes these small indentations, and the wire soindented is securelyWrapped around the perforated well-tube, with the coils abutting eachother. The indentations Vare formedon both sides of the wire instead ofon one side only, as shown in the drawings, so that when the yvire iswrapped around the tube the indentations of one coil will be oppositethe indentations of the adjacent coil, thereby forming a mesh of thenecessary size without the necessity of forming deep. indentations whenon one side only of the wire, which would tend to weaken the wire, andconsequently reduce the strength of the` wire-coil covering.

Indenting the wire as above described enables the coils to be broughtclose together, so that the coilswill touch each other, and therebyprovide a strong and durable covering for the well-tube that willwithstand any rough usage in the drilling of the well. The indentationsof the wire remove the necessity of the coils being separated to form apassage for the water into the tube, the separation of the wire coilsmaterially weakening the covering and in time rendering it useless.

Pins j' are used to form supports and fastenings for the lower end ofthe wire coil of the filter or strainer, or any suitable and wellknownmeans may be providedfor securing athe filter or strainer to thewell-tube section as found most practical.

Having now fully described our invention, what We claim as new, anddesire to secure by Letters Patent, is-

l. A filter or strainer for well-tubes, comprising a perforated tubesection having wound around it coils of round wire with indentationsupon both sides thereof and on line with each other, the indentations ofone coil I registering with those of the adjacent coil to form meshesfor the passage of the water, substantially as and for the purpose setforth.

2. A filter or strainer for well-tubes, comprising a perforatedtube-section -provided with a point and having Wound around it coils ofround wire with indentations upon both sides thereof, the indentatons ofone coil rege have yhert-insulto subscribed our names in theistezl-)ingfwifglthoee ofrthc; atxgjaoitroilfoogm' presence' ofrtvvoWitnesses.

mes es or e passageo e Wa er, sm u ey section having a. screW-threaded'shank ab its 5 lower'end, and the drill-point having a,screwthreaded soeketfor"engagiugbherewith, Sub- Wiquesses: sbanbially asand for the purpose described; AADAM E. WISE,

In testimony that we clainq theabove we JOHN RENTSCHLER.

